CVE-2015-7322 in Pulse Connect Secure
Summary
by MITRE
The Secure Meeting (Pulse Collaboration) in Pulse Connect Secure (formerly Juniper Junos Pulse) before 7.1R22.1, 7.4, 8.0 before 8.0R11, and 8.1 before 8.1R3 provides different messages for attempts to join a meeting depending on the status of the meeting, which allows remote attackers to enumerate valid meeting ids via a series of requests.
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Analysis
by VulDB Data Team • 06/20/2022
The vulnerability described in CVE-2015-7322 affects Pulse Connect Secure's Secure Meeting component, formerly known as Junos Pulse, which is a critical collaboration and remote access solution used by enterprises for secure connectivity. This vulnerability resides within the meeting enumeration mechanism of the Pulse Collaboration feature, specifically in versions prior to the mentioned security patches. The flaw manifests as an information disclosure issue that occurs during the meeting join process, where the system provides different response messages based on whether a meeting ID exists or not. This behavior creates a predictable pattern that attackers can exploit to determine valid meeting identifiers through systematic request analysis.
The technical implementation of this vulnerability stems from improper error handling within the Secure Meeting service component. When a user attempts to join a meeting, the system returns distinct responses depending on the meeting's status - whether it exists, is active, or has been terminated. This differential response behavior creates a side-channel information leak that directly exposes the system's meeting ID database to unauthorized enumeration. Attackers can systematically test various meeting ID combinations and observe the different response patterns to identify valid meeting identifiers, effectively bypassing normal access controls through passive reconnaissance techniques. The vulnerability specifically affects versions before 7.1R22.1, 7.4, 8.0R11, and 8.1R3, indicating a widespread issue across multiple major release branches of the Pulse Connect Secure platform.
The operational impact of this vulnerability extends beyond simple information disclosure, as it enables attackers to perform reconnaissance attacks that could lead to further exploitation. Once valid meeting IDs are discovered, attackers can potentially access meeting details, observe meeting participants, or even attempt to join meetings without proper authorization. This vulnerability directly violates security principles by providing attackers with actionable intelligence about the system's internal structure and meeting configurations. The issue represents a classic example of insecure error handling that violates the principle of least information disclosure, where the system inadvertently reveals information about its internal state through response variations. Organizations using affected versions face significant risk of unauthorized access to sensitive collaboration sessions and potential data exposure through this enumeration capability.
The vulnerability maps to CWE-200 (Information Exposure) and CWE-384 (Session Management Issues) within the Common Weakness Enumeration framework, demonstrating how improper error handling can create security weaknesses that lead to information disclosure. From an ATT&CK framework perspective, this vulnerability enables the T1083 (File and Directory Discovery) and T1590 (Infrastructure Discovery) techniques, as attackers can systematically enumerate meeting resources and discover organizational collaboration infrastructure. The attack surface is particularly concerning for organizations that rely on Pulse Connect Secure for remote collaboration, as it provides a low-effort method for attackers to discover valid meeting identifiers that could contain sensitive business information, personal data, or confidential communications. Organizations should implement immediate mitigations including applying the relevant security patches, implementing rate limiting for meeting join requests, and monitoring for unusual enumeration patterns in system logs to prevent exploitation of this vulnerability.
The remediation approach requires organizations to upgrade to the patched versions mentioned in the CVE description, specifically versions 7.1R22.1, 7.4, 8.0R11, and 8.1R3 or later. Additionally, network administrators should implement defensive measures such as request rate limiting, IP-based access controls, and enhanced logging of meeting join attempts to detect potential enumeration attacks. The vulnerability demonstrates the importance of proper error handling in security-critical applications and highlights the need for consistent response patterns that do not reveal system state information to unauthorized parties. Organizations should also conduct thorough security assessments of their collaboration infrastructure to identify similar information disclosure vulnerabilities that could be exploited through similar enumeration techniques.